Air pollution and its impact on air quality are a major area of environmental concern. This course will provide the students with a background in the fundamentals of volatile hydrocarbons in the atmosphere, and their reaction rates. Both anthropogenic and natural emissions of volatile organic compounds (VOC’s) will be discussed together with their role in ozone and photochemical oxidant/smog formation. Also to be discussed will be reaction products of these compounds, some of which form toxic or hazardous air pollutants, for example the formation of carbonyls.